JOYSTICK DIFFICULTIES
1:
Flayers complain about joystick motion, but game appears to operate normally.
A:
Ensure that control panel hole size is adequate for 49.way joysticks. This joystick has a greater
range of motion than standard joysticks, requiring a larger clearance opening in the panel (1.50 in.
38 mm). A smaller hole may prevent activation of the outer control bits. limiting character speed.
B: Verify
that the joystick is exactly centered under the control panel hole. Slight misalignment may
cause a loss of full character speed in only one direction. This difficulty can be detected by
entering the menu system from the BEGIN TEST switch instde the coin door, From the
DIAGNOSTICS menu, choose the SWITCH TESTS (refer to Sectlon Two for addltional details).
C: Sticking can result if liquids are spilled onto the control panel.
Disconnect the cable from the
joystick in question and remove the four philips head screws at the corners of the slide retainer.
Lift the slide retainer off of the Joystick base. Clean but do not lubricate the sliding pieces.
D: Sloppy action or weak return pressure may be related to the joy$ck centering grommet. Turn
OFF the game power and open up the control panel. Disconnect and disassemble as described
above. Lift the slide retainer and electronics off of the joystick base. Examine the grommet and
spacer for wear or damage and replace as required. Clean the components before reassembly.
2:
Joystick operation is inconsistent during game play.
A:
49.way joysticks use optical position sensors. Inspect interior of control area for sources of light
that could shine on the joystick electronics and cause false signals. Cover or shield lighting as
needed to eliminate high levels of illumination near the joysticks.
B. Turn ON the game power. Using the 20 Volt D.C. setting on a digital voltmeter. measure D.C.
voltages present at the joystick connector pins. Verify the +5V and ground connections.
Refer to
the Cabinet Wiring Diagram (Section Three) for
specific
wiring information and voltage limits.
C: Using the 2 Volt A.C. setting on a digital voltmeter, measure the same D.C. voltages as above.
Any reading here indicates that the supply voltages are unstable and may contain ripple or noise.
D:
Turn OFF power and interchange joystick connectors to determine if problem is in a cable.
E.
Verify proper operation of 49-way Joystick Assembly by placing it in a known good game
4-5
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